Pathology Outlines Melanoma Extension Without Malignant Changes in Oral Melanotic Macule: A Report of Two Cases and Review of the Literature Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Melanoma of the Oral Cavity: About Two Cases and Review of Literature Pathology Outlines Melanotic macule This is a very rare case of metastatic oral mucosal melanoma to the colon with an unusual presentation mimicking melanosis coli. The colonoscopy findings show no mass effect but multiple hyperpigmented lesions